Patent US2965746A successfully refreshed from Google Patents.
US2965746A
Expired / Lapsed
US
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Electric arc welding
Assignee: BOC Group Ltd
•
Filing: 1958-08-22
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Granted: 1960-12-20
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Expires: 1978-08-22
Abstract
No abstract record available.
Inventors
- 👤 Cresswell Robert Arthur
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 08:38
CPC Classifications
B; B23; B23K; B23K9/00; B23K9/24; B23K9/26; B23K9/16; B23K9/173; B23K9/28; B23K9/29; B23K9/291; B23K9/295
Claims Analysis
Total Claims: 0
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-12-20 | 1964-06-20 | 1964-12-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-12-20 | 1968-06-20 | 1968-12-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-12-20 | 1972-06-20 | 1972-12-20 | $7700.00 | Window Closed / Lapsed |